如何使用索引交换文本文件中的字母，使用两个不同的列表？

Question

我正在编写 encrypting/decrypting 代码，这是我目前所拥有的...

def encrypt():
  while True:
    try:
        userinp = input("Please enter the name of a file: ")
        file = open(f"{userinp}.txt", "r")
        break  
    except:
      print("That File Does Not Exist!")
  second = open("encoded.txt", "w")
  
  for line in file:
    line = line.strip()
    swap = swapped(line)
    print(swap)
    change_char = change_character(swap)
    reversed = reverse_word(change_char)
    second.write(reversed)

  file.close()
  second.close()
 
def swapped(line):
  line = line.strip()
  new = ''
  
  arranged = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
  random = ["q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m"]


  for character in line:
    i = arranged.index(character)
    if arranged[i] == random[i]:
      new = new + random[i]
      
    

    
def change_character(swap):
  empty = []
  secondary = ""
  num = ord(swap)
  empty.append(num)
  for i in range(len(empty)):
    if num == 32:
      num = 9888
    else:
      num = num + 80
  secondary = secondary + chr(num)
  return secondary
    
      

def reverse_word(change_char):
  data_1 = change_char[::-1]
  return data_1



  
def decrypt():
  file = open(f"encoded.txt", "r")
  decode = open("decrypted.txt", "w")
  for line in file: 
    un = unswap(line)
    change = unchange_char(un)
    normal = unreverse(change)
    decode.write(normal)

  file.close()
  decode.close()

我实际上是在尝试以 3 种方式修改文本文件，将其粘贴到另一个文件，然后使用该文件解密文本文件，并将其放入另一个文件中。

我在这样做时遇到的唯一实际问题是使我的一个更改功能起作用，这是在称为“交换”的加密功能之后的第一个功能。我想要做的是在文本文件中搜索适合排列列表的单词，然后将这些字母与同一索引处的随机列表中的字母交换，以便文本文件相应地更改以更改内容。我已经尝试了很多不同的东西，而我现在正在尝试的东西，我得到了错误...

""不在列表中，

即使只是打印出 arranged[i]。我基本上已经尝试了我能想到的一切，但没有运气。如果可能的话，我希望该函数继续使用我创建的两个列表。谢谢！

Answer 1

出现该错误的原因是 space 字符不在列表中，因此您有两个选择：

您可以将 space 添加到两个列表中。
您可以查看您当前所在的角色是否是space。

这将解决该问题，但我不确定该函数中的其余逻辑是否正确，此时它只会交换字符，如果它们是完全相同的插槽中的相同字符，这确实不会发生，这意味着您将始终得到一个空字符串。

这是我会做的，不会对你的功能做太多改变：

def swapped(line):
    line     = line.strip()
    new      = ''
    arranged = ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"]
    random   = ["a","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l","z","x","c","v","b","n","m"]
    for character in line:
        if character == ' ':
            new += ' '
        else:
            i = arranged.index(character)
            new = new + random[i]
    print(new)


swapped("lol this is just a test")

如何使用索引交换文本文件中的字母，使用两个不同的列表？

How do I use indexing to swap letters from a text file, using two different lists?

python

encryption

indexing

for-loop

python-3.x